# Using CLang version 14

**URL:** <https://discourse.julialang.org/t/using-clang-version-14/89321>\
**Category:** General Usage\
**Tags:** clang\
**Created:** [October 26, 2022, 7:11pm UTC](https://discourse.julialang.org/t/using-clang-version-14/89321 "2022-10-26T19:11:24Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![pixel27](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pixel27/32/8902_2.png) [@pixel27](https://discourse.julialang.org/u/pixel27)\
**Post date:** [October 26, 2022, 7:11pm UTC](https://discourse.julialang.org/t/using-clang-version-14/89321/1 "2022-10-26T19:11:25Z")

</div>

I would like to use CLang version 14 to parse some C++ files. The C++ files I would like to parse are using the “module” feature added in C++20 and it doesn’t appear that version 13 understands the module keyword. I believe 14 does/might.

Looking at the Project.toml file for Clang.jl it appears it supports version 12, 13, and 14 of Clang\_jll. However it also appears to be using version 13:

```julia
julia> using Clang;

julia> Clang.version()
"clang version 13.0.1 (/depot/downloads/clones/llvm-project.git-5a9787eb535c2edc5dea030cc221c1d60f38c9f42344f410e425ea2139e233aa 8a2ae8c8064a0544814c6fac7dd0c4a9aa29a7e6)"

```

When trying to manually add Clang\_jll@14.0.6 I get:

```julia
(@v1.8) pkg> add Clang_jll@14.0.6
    Updating registry at `~/.julia/registries/General.toml`
   Resolving package versions...
ERROR: Unsatisfiable requirements detected for package libLLVM_jll [8f36deef]:
 libLLVM_jll [8f36deef] log:
 ├─possible versions are: 13.0.1 or uninstalled
 └─found to have no compatible versions left with Clang_jll [0ee61d77]
   └─Clang_jll [0ee61d77] log:
     ├─possible versions are: 9.0.1-14.0.6 or uninstalled
     └─restricted to versions 14.0.6 by an explicit requirement, leaving only versions 14.0.6

```

My guess that is because Julia 1.8 is using version 13 itself. So is there a way to ALSO load 14, or some “may make things unstable” flag I can set to have Julia use 14 instead, or is there a semi-stable build I can grab that using version 14 of Clang?